TABLE 5.

Distribution of 3 or 4 Valid DTP and DTaP Doses and VE, Compared With No Vaccination

No. (%)VE, %95% CI
Case SubjectsControl Subjects
Only 3 valid dosesN = 47N = 297
    All DTP8 (17)53 (18)95.587.3–98.4
    Mixture of DTP and DTaP5 (11)26 (9)94.581.1–98.4
    All DTaP34 (72)210 (71)95.488.7–98.2
    Unknown08 (3)
Only 4 valid dosesN = 63N = 495
    All DTP25 (40)160 (32)96.791.9–98.7
    Mixture of DTP and DTaP*17 (27)190 (38)98.095.0–99.2
    All DTaP20 (32)126 (25)96.790.8–98.8
    Unknown1 (1)19 (4)
  • * Of mixtures, 81% were 3 DTP doses (doses 1–3) and 1 DTaP dose (dose 4).

  • Sixteen (84%) of 19 control children received 3 DTP doses (doses 1–3) and 1 unknown dose.